Convert image to grayscale
Convert every image pixel to a true luminance-based grayscale value.
Drop an image here
or paste from your clipboard
Convert every image pixel to a true luminance-based grayscale value. Preview and apply a true grayscale transformation. Convert every pixel to a luminance-based shade of gray rather than merely lowering display saturation. The source file remains unchanged and all processing runs locally in your browser.
Why use this tool
- Preview a consistent grayscale conversion before applying it.
- Remove color while retaining brightness differences and intermediate gray tones.
- Preview and process the file locally without sending it to an image server.
How it works
- Choose a JPG, PNG or WebP image and check the preview.
- Preview a consistent grayscale conversion before applying it.
- Apply the operation and download the result in the source format.
How the operation works
Red, green and blue channels contribute differently to perceived luminance, so equally bright colors do not always become the same gray.
Grayscale keeps many intermediate tones; use the black-and-white tool when only pure black and pure white are required.
Complementary image tools
Private by design
Your files stay on your device. Processing starts only when you choose an image, and nothing is stored on our servers.
Frequently asked questions
Are my images uploaded?
No. Processing happens locally in your browser, so your image files never leave your device.
Which image formats are supported?
The tool accepts JPG, PNG and WebP images and preserves transparency when the selected output supports it.
How is each grayscale shade calculated?
Red, green and blue channels contribute differently to perceived luminance, so equally bright colors do not always become the same gray.
Is grayscale the same as strict black and white?
Grayscale keeps many intermediate tones; use the black-and-white tool when only pure black and pure white are required.
Does grayscale conversion change my original file?
No. The browser creates a new downloadable result and leaves the selected source file unchanged.
Can I use this tool on a phone?
Yes. Use a current mobile browser that can select a JPG, PNG or WebP file and save downloads.
Which image formats are accepted?
You can use JPG, PNG and WebP. Border and Round export PNG; the other operations keep the input format.
Related image tools
Browse tools by format
Open a format hub to see its real converters and compatible workflows.